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7a62a2a5ae
Previously, this pass ran over every function in the Module if added to the pass order. With this change, it runs only over those with a GC attribute where the GC explicitly opts in. A GC can also choose which of entry safepoint polls, backedge safepoint polls, and call safepoints it wants. I hope to get these exposed as checks on the GCStrategy at some point, but for now, the checks are manual string comparisons. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230097 91177308-0d34-0410-b5e6-96231b3b80d8
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